In this study oesophageal photoplethysmograph data from eight patients under positive pressure ventilation was analysed to test the hypothesis that the modulations created by the ventilation in the AC PPG single could be used to estimate the venous saturation. In order to estimate the instantaneous arterial and venous saturation Smoothed-pseudo WignerVille Distribution (SPWVD) was utilised. The...

the simultaneous flow of oil and water in porous media is described by relative permeability curves, mainly derived from laboratory experiments. relative permeability is of paramount importance in predicting reservoir production performance and drive mechanisms and its value depends largely on the volume fraction of fluids present in the test samples. nowadays x-ray scanners are one of the most...

Several methods are available for performance prediction of single phase shaded pole induction motors. A simple model, in conjunction with a more complicated and accurate model, which considers the asymmetrical windings and core loss, is used to compare the prediction methods against experimental results. Saturation is incorporated in the model. Fundamental and harmonic flux density wave distri...

No-reference image quality assessment is an image characterization task of sorts. We explore the chromatic characterization of color images and relate it to image quality. Poor image quality is usually related to a loss of contrast; contrast is measured along the color dimensions of luminance, saturation and hue (which is a circular variable). The distribution of saturation as a function of lum...

BACKGROUND A pretrial clinical improvement project for the BOOST-II UK trial of oxygen saturation targeting revealed an artefact affecting saturation profiles obtained from the Masimo Set Radical pulse oximeter. METHODS Saturation was recorded every 10 s for up to 2 weeks in 176 oxygen dependent preterm infants in 35 UK and Irish neonatal units between August 2006 and April 2009 using Masimo ...

application of archie equation in carbonate reservoirs is not easy due to high dependence of its parameters on carbonate characteristics. carbonates are very heterogeneous in nature and hydrocarbon reserve estimation in these reservoirs of mostly oil-wet and intermediate-wet is highly influenced by the input values of saturation exponent. to our knowledge, non representative oils have been used...

We investigate the heavy quark photoproduction based on the k ⊥-factorization approach, focusing on the results from the saturation model. The deviations in the results using the unintegrated gluon distribution considering the saturation model and the derivative of the collinear gluon distribution are analysed. Total cross sections and p T distributions are analysed in detail, setting the devia...

We present a new method for the measurement of saturation of the optical transition of fluorescent molecules in solution, which is based on detection with a CCD camera of a two-dimensional projection of the three-dimensional, spatially nonuniform fluorescence intensity distribution as generated in a bulk solution of the fluorophore by excitation with focused femtosecond optical pulses. Essentia...